Improvement in devices for swaging and setting saw-teeth



UNITED STATES PATENT FFIGE.

MAURICE J. BAHILLY, OF BEAVER FALLS, PENNSYLVANIA.

IMPROVEMENT IN DEVICES FOR SWAGING AND SETTING SAW-TEETH.

Specification forming part of Letters Patent No. 163,252, dated May 11,1875 application led March 3, 1875.

To all whom it may concern: p

Be it known that I, MAURICE J. RAHILLY, of Beaver Falls, in the countyof Beaver and State of Pennsylvania, have invented certain new anduseful Improvements in Combined Saw-Swage and Saw-Set 5 and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, which will enable others skilled in the art to which itpertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

The nature of my invention consists in the construction and arrangementof a combined saw swage or upset and saw-set, as will be hereinaftermore fully set forth.

In the annexed drawing, Figure I is a section, and Fig. 2 is a sideelevation, of a device embodying my invention.

A represents the handle of my device, made of any suitable dimensions,and having two parallel jaws or arms, B B, formed at its outer end. Atthe base, between these jaws, is formed or inserted a pin or rib, c,running in the center from jaw to jaw. Between these jaws is inserted apolygonal-shaped wheel, C, which is fastened by a pin, b, passingthrough the jaws and the center of the wheel. The wheel C may be of anynumber of sides, but the number must be uneven, so as to bring eachangle diametrically opposite the center of a side. In the center of eachside of the wheel is made a groove, d, corresponding in shape with therib a, and the parts are of such relative proportions that the wheel cannever be fastened in the jaws by the pin b unless one side is flat downat the base of the jaws over the rib, so that when the pin b is insertedthe wheel will be held securely and firmly in position. In two or moreof the angles of the wheel C are made V-shaped grooves c e, of differentangles, by which the saw may be swaged or upset more or less, asdesired, according to the angle of the notch. In the remaining angles ofthe wheel are made radial slots it', of different widths, to set thesaw, whatever its thickness.

The operation of the device is as follows: As a saw-swage, the wheel Cis set to bring the desired notch c on a line with the center of thehandle. This notch is then applied to the saw, and with a hammer a blowis given on the end of the handle. As a saw-set, the wheel is set so asto bring the desired slot il on aline with the center of the handle, thedevice applied to the saw-tooth, and with the handle as a lever thetooth is set as desired.

This device is cheap to manufacture, durable, certain in its operation,and not liable to get out of order, owing to its great simplicity.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. The polygonal-shaped wheel C, provided with two or more Vshapednotches, e, of ditferent angles, and two or more V-shaped slots, t', ofdiii'erent Width, and held in a handle, A, for the purposes herein setforth.

2. The combination of the handle A with jaws B B and rib o, thepolygonal-shaped wheel C, having grooved sides, and provided withnotches e and slots t', and the pin b, all 'substantially as and for thepurposes herein set forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

MAURICE J. BAHILLY.

Witnesses:

WM. LANNING, ROBERT MGGAHEY.

